Deep-well pump.



W. B. HEWITT.

DEEP WELL PUMP. APPLIOATIQN PI BDM'AY 11, 1912.

Patented July 7, 19%.

lime/523W I "QM/ii UNITED STATES PriTENT OFFTQE.

WILLIAM B. HEWITT, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR T0 INTERNATIONAL- STEAM PUMP COMPANY, A CORPORATION OF NEW JERSEY.

DEEP-WELL PUMP.

Specification of Letters Patent.

Patented July 7, 1914.

Application filed May .11, 1912. Serial No. 696,597.

To all whom it may concern:

Be it known that I, WILLIAM B. Hnwrr'r, a citizen of the United States, residing at Holyoke, county of Hampdcn, and State of Massachusetts, have invented certain new and useful Improvements in Deep-Well Pumps, fully described and represented in the following specification and the accompanying drawings, forming a. pact of the same.

This invention relates to that class of pumps used especially for vi'scp ll pumpmg, in which a plurality f reciprocating buckets or plunger-s act on the liquid successively, the object of the invention being to provide an improved power pump of this class, in which the operating connections for the ibuckets or plungers shall be simple, strong and durable, and all the working parts readily accessible and removable for inspection and repair, without removing the heavier parts of the pump head.

The invention aims particularly at the production of a satisfactory triple acting power pump securing the above results.

In the accompanying drawings forming a part of this specification, a triple acting deep well pump embodying the invention in its preferred form is shown, and this construction will now be described in detail and the features forming the invention then specifically pointed. out. in the claims.

In the drawings, Figure 1 a front view of the pump, with the pump head in elevation and the pump well in section with parts of the bucket rods broken away to show the construction. Fig. 2 is a vertical cross section on the line 2 of Fig. 1. Fig. 3 is a detail section. of one of the buckets and the bucket rods.

Referring to said drawings, A is the frame of the pump head mounted above the well B and carrying the crank shaft C, shown as driven by gear T) from power shaft E'and pinion F. The crank shaft C carries separate cranks for operating the three buckets, these cranks being set at 120 apart, and connected to the respective buckets as follows :The middle crank r is connected by its crank rod 10 and sliding cross head 11 directly to the bucket rod 12 connected to the botton bucket G. Outside the crank g are the cranks 72. connected by their crank rods 10 and sliding cross heads 11. to rods 13 and yoke 14 on hollow bucket rod 1.5 connected to the intermediate bucket H,-this hollow bucket rod 15 inclosing the lnnzlret.

and sliding cross heads 11 to rods 16 and yoke 17 on hollow bucket rod 18 connected to the top bucket I, this hollow bucket rod 18 inc-losing bucket rod 15 and being provided with a stufling boxl at its upper end. This hollow bucket rod 18, with the inclosed bucket rods 12, 15, moves through the discharge head K at the top of the drop tube L within the well, a suitable stutling box Z being provided and this discharge head K having" a delivery pipe 19.

The well is enlarged above the discharge head K to accommodate the cross heads and below the discharge head is shown as having the usual well lining or tube M extending to the depth required. The bucket or plungers G, H, I may be of any suitable construction, being shown in Fig. 3 as of a common form suitably packed in the drop tube L and having sliding lift valves 20; The drop tube L and bucket rods for pumps of considerable depths will be formed in sections and connected together by the means shown, orin any other suitable manner.

The construction is such as to provide for convenient access to the working parts and for conveniently -withdrawing upward the bucket rods and buckets as well as the .drop tube, if desired. For this purpose the enlarged upper portion of the well and frame A are open at the front, as shown, this providing space for the withdrawal of the parts, and the guides for the cross heads 11 consist of front and rear plates 21, 22, with the front plate 21 removable and secured to the fixed rear plate by bOltSQj as shown, or otherwise, so asto be readily detached for removal, permitting convenient access to and removal of the cross heads. The crank shaft C also. is preferablv not set directly in line with the bucket ro ds, but slightly to I the rear thereof, preferably about onehalf the crank radius, as shown. This offsetting aids in providing room at the front of the pump for lifting the working parts from pumps, in which there is no difficult side thrust, and a pump of maximum capacity and high efficiency is secured with a small size well, while the buckets, stufiing boxes, rods, and all the working parts are readily accessible and removable without removing the heavy parts of the pump head.

The buckets are balanced by'the concentric bucket rods, so that the pull of the rods upon each of the buckets is central and directly in the line of bucket movement, and

the action on the bucket rods is directly in the same line and balanced bythe-connections to the cross heads, so that there is no tendency of the operating mechanism to tilt the buckets or operate them other than in in an exact vertical line.

What I claim is.

1. A deep well pump having a U-shaped base, three buckets. or plungers arranged in line, a. three throw crank shaft and connections to reciprocate said buckets or plungers,

the said crank shaft being placed in offset relation to the central line of the buckets and on the closed side of the base.

2. A deep well pump having a U-shaped base, a plurality of buckets or plungers arranged in line, a single crank shaft in combination with a plurality of connections including connecting rods of equal length adapted to reciprocate said buckets or plungers, the said crank shaft being placed in offset relation to the central line of the buckets and on the closed side of the base.

' shown and described.

' 4-. A deep well pump having three balanced buckets or plungers arranged in line, concentric sucker rods for the buckets, yokes attached to the two outer sucker rods, a three throw crank shaft, cranks for the respective buckets set 120 apart, cross-heads and cross-head guides, connecting rods between the cranks and cross-heads adapted to communicate an equal range of movement to the cross-heads, and connections between I the cross-heads and the center sucker rod and yokes, whereby the yokes and buckets may be reciprocated vertically without exerting side thrust.

nism comprising a crank shaft having a central crank, a pair of cranks located 120 in advance of the central crank, one crank of the pair being on each side of the central crank, a second pair of cranks located 120 behind the central crank and outside of the first pair of cranks, cross-heads and crosshead guides, the latter being in parallel alinement with the crank shaft axis, and

connecting rods of equal length between the cranks and cross-heads.

7. A deep well pump operating mechanism comprising a crank shaft having a central crank, a pairof cranks located 120 in adyance of the central crank, one crank of the pair being on each side of the central crank, a second pair of cranks located 120 behind the central crank and outside of the first pair of cranks, cross-heads and crosshcad guides, the latter being in parallel 'alinenient with the crank shaft axis and the crank shaft axis being offset vertically with relation to the cross-head guides, and connecting rods of equal length between the cranks and cross-heads.

8. A deep well pump having three balanced buckets or plungers arranged in line, concentric sucker rods for the buckets, a three-throw crank shaft, cranks for the respective buckets set 120 apart, the cranks for the outer sucker rods being arranged in pairs, one crank of each pair being on each side of the crankjfor the inner sucker rods, cross-heads and cross-head guides, connecting rods between the cranks and cross heads, and connections between the cross-heads and the sucker rods including yokes to which the cranks of each pair are connected, where by the bucket rods and buckets may be reciprocated vertically without exerting side thrust.

In testimony whereof, I have hereunto set my hand, in the presence of two subscribing witnesses.

WILLIAM B. HEWITT.

Witnesses:

. JAMEs HAY EN, J. L. PARKER.

Copies of thh'patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

' Washington, D. C. 

